The rising threat of air pollution in India’s small cities
But while air pollution may come across as a metro-city problem for much of the year, and a north-Indian problem in early winter, data indicates that’s only the tip of the iceberg.
In November, when pre-Diwali rain briefly insulated Delhi’s vulnerable air from the fireworks, some of the most polluted locations in India the morning after the festivities were in Bihar and Odisha, far away from the glitz of metros, data from the Central Pollution Control Board show.…